chore: remove empty lines from configmap (#843)

Signed-off-by: Nic <qianyong@api7.ai>

Author: nic-6443

charts/apisix-ingress-controller/templates/configmap.yaml

@@ -22,34 +22,19 @@ metadata:
 data:
   config.yaml: |
     log_level: {{ .Values.config.logLevel | default "info" }}
-
     controller_name: {{ .Values.config.controllerName | default "apisix.apache.org/apisix-ingress-controller" }}
-    
     leader_election_id: {{ .Values.config.leaderElection.id | default "apisix-ingress-controller-leader" }}
-    
     leader_election:
-      
       leaseDuration: {{ .Values.config.leaderElection.leaseDuration | default "15s" }}
-      
       renewDeadline: {{ .Values.config.leaderElection.renewDeadline | default "10s" }}
-      
       retryPeriod: {{ .Values.config.leaderElection.retryPeriod | default "2s" }}
-      
       disable: {{ .Values.config.leaderElection.disable | default false }}
-      
     metrics_addr: {{ .Values.config.metricsAddr | default ":8080" }}
-    
     enable_http2: {{ .Values.config.enableHTTP2 | default false }}
-    
     probe_addr: {{ .Values.config.probeAddr | default ":8081" }}
-    
     secure_metrics: {{ .Values.config.secureMetrics | default false }}
-    
     exec_adc_timeout: {{ .Values.config.execADCTimeout | default "15s" }}
-
     provider:
       type: {{ .Values.config.provider.type | default "apisix" }}
-
       sync_period: {{ .Values.config.provider.syncPeriod | default "1s" }}
-
       init_sync_delay: {{ .Values.config.provider.initSyncDelay | default "20m" }}